io.github.soyeladice-svg/bursia-utils · v1.5.0 · productivity
Burs-IA Utils is healthy: it completed an MCP handshake in 417 ms and exposes 466 tools.
Free, no-login LatAm/Spanish-native agent tools; validate-only IDs; unsigned consistency receipts.
Endpoint: https://bursia-utils-production.up.railway.app/mcp (streamable-http)
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| Users (last 30 days) | 0 |
| Handshake | Healthy |
| Auth needed | None |
| Tool count | 466 |
| Latency | 417 ms |
| Last checked (UTC) | 2026-11-01T01:35:27.619Z |
| Checked (UTC) | Status | Latency | Error |
|---|---|---|---|
| 2026-11-01T01:35:27.619Z | Healthy | 417 |
find_tool | Searches the 465 tools of this server by keywords (English or Spanish) and an optional family, and returns the best matches with their input schemas. When: the right tool for a task is not known yet. Not for: running a tool (tools/call does that). Side effects: none (read-only, no network access, no |
token-estimate | Heuristically estimates how many LLM tokens a text uses (Latin text ~4 chars/token, CJK ~1 char/token, code and punctuation denser) with a ±25% range. Real counts depend on each model's tokenizer. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, retries, c |
prompt-template-fill | Fills {{variable}} placeholders (dotted paths allowed, optional {{name|default}}) from a values object, reporting missing and unused variables; strict mode fails on missing values. No code execution. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, retries |
json-repair | Repairs almost-JSON typical of LLM output (code fences, comments, single quotes, unquoted keys, trailing or missing commas, Python True/False/None, NaN, unclosed strings and brackets) and returns the parsed value and the fixes applied. When: a model returned almost-valid JSON that has to be parsed w |
json-extract | Finds and parses JSON objects/arrays embedded in free text (e.g. an LLM reply): fenced ```json blocks first, then balanced {…}/[…] spans; optionally repairs near-JSON. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, retries, chunking, ranking, JSON clean- |
code-blocks-extract | Extracts fenced code blocks (``` or ~~~) from Markdown or LLM output with their language tags and line counts, optionally filtered by language. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, retries, chunking, ranking, JSON clean-up). Not for: finding an |
rag-chunk | Splits text into chunks of at most N characters or estimated tokens with overlap, preferring paragraph, then sentence, then word boundaries; returns offsets for citation. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, retries, chunking, ranking, JSON cle |
dedupe-similar | Groups near-duplicate strings (Jaccard similarity of character 3-grams ≥ threshold, accent- and case-insensitive) among up to 2,000 items, keeping the first of each group. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, retries, chunking, ranking, JSON cl |
vector-similarity | Computes the cosine similarity, dot product, Euclidean and Manhattan distance between two numeric vectors of equal length (≤ 8,192 dims), plus their L2 norms. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, retries, chunking, ranking, JSON clean-up). Not |
vector-top-k | Ranks up to 2,000 candidate vectors by cosine similarity (or negative Euclidean distance) to a query vector and returns the top k with indices and scores; total size capped at 2M numbers. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, retries, chunking, |
bm25-rank | Ranks up to 2,000 documents for a query with Okapi BM25 (k1, b tunable) using accent-insensitive Unicode word tokens, e.g. to pick passages for retrieval without embeddings. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, retries, chunking, ranking, JSON |
backoff-schedule | Computes retry delays for exponential, linear or constant backoff with a cap and optional jitter (full, equal or decorrelated; seeded for reproducibility), and the cumulative wait. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, retries, chunking, ranking |
retry-after-parse | Parses an HTTP Retry-After value (delay seconds or HTTP-date) into seconds to wait and the absolute retry time, relative to a given now instant. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, retries, chunking, ranking, JSON clean-up). Not for: computing |
rate-limit-plan | Computes, for a limit of N requests per window and a number of calls to make, the minimum spacing between calls, the minimum total duration and a token-bucket wait time for the next call. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, retries, chunking, |
idempotency-key | Derives a deterministic idempotency key from a request (method, URL, canonical JSON body, optional scope) as SHA-256 hex or a UUID-shaped string, so retries of the same request reuse the same key. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, retries, c |
token-units-convert | Converts a token amount between decimal and integer base units exactly (BigInt), e.g. USDC (6 decimals) 1.5 ↔ 1500000, ETH (18) or any decimals 0-36, as used in x402 payment requirements. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, retries, chunking, |
x402-cost-estimate | Estimates the cost of a batch of pay-per-call API requests (e.g. x402 at $0.001/call) in USD and USDC base units, after a free allowance, and how many calls a budget buys. Exact decimal math. When: an agent description, tool list, OpenAPI document or receipt has to be read, converted or checked agai |
llm-cost-estimate | Estimates LLM request cost from input/output token counts (or text, estimated heuristically) and supplied per-million-token prices, with optional cached-input pricing and call volume. No built-in price list. When: an agent loop needs an exact, repeatable result for a bookkeeping step (tokens, costs, |
text-redact-pii | Masks common personal data and secrets in text: emails, phone numbers, Luhn-valid card numbers, IBANs, IPv4 addresses, JWTs, API keys (sk-, AKIA, ghp_, xox, AIza) and PEM private keys. Pattern-based; may miss or over-match. When: personal data (emails, phones, IDs, cards) has to be masked in text be |
tool-definition-convert | Converts a tool definition (name, description, JSON Schema parameters) between MCP (inputSchema), OpenAI function-calling (function.parameters) and Anthropic tool-use (input_schema) shapes, validating the name. When: an agent description, tool list, OpenAPI document or receipt has to be read, conver |
color-convert | Parses any common CSS color (hex 3/4/6/8, rgb(), hsl(), hwb(), oklch(), oklab(), 148 named colors) and returns hex, RGB, HSL, HSV, CMYK (naive), OKLab, OKLCH and CIELAB (D65). Out-of-gamut OKLCH is chroma-reduced into sRGB. When: color values, contrast or palettes have to be computed exactly, e.g. f |
color-contrast | Computes the WCAG 2.x contrast ratio between foreground and background colors (alpha composited over the background) with AA/AAA pass/fail for normal text, large text and UI components. When: color values, contrast or palettes have to be computed exactly, e.g. for accessibility checks. Not for: find |
color-contrast-fix | Finds the closest color to a foreground (changing only OKLCH lightness, keeping hue) that reaches a target WCAG contrast ratio against a background, trying darker and lighter directions. When: color values, contrast or palettes have to be computed exactly, e.g. for accessibility checks. Not for: com |
color-mix | Mixes two colors by a weight (like CSS color-mix) in OKLab (perceptual, default), linear sRGB or gamma sRGB space. When: color values, contrast or palettes have to be computed exactly, e.g. for accessibility checks. Not for: parsing any common CSS color (color-convert). Side effects: none (read-only |
color-adjust | Adjusts a color in OKLCH: change lightness, chroma (saturation) and hue by deltas, or set alpha; results are mapped back into the sRGB gamut. When: color values, contrast or palettes have to be computed exactly, e.g. for accessibility checks. Not for: finding the closest color to a foreground (color |
color-palette | Generates harmony palettes from a base color by rotating OKLCH hue: complementary, analogous, triadic, split-complementary, tetradic (square) or monochromatic (lightness steps). When: color values, contrast or palettes have to be computed exactly, e.g. for accessibility checks. Not for: parsing any |
color-scale | Builds an evenly spaced color ramp between two colors in OKLab (n steps), or a 50-950 design-system scale from one brand color by varying OKLCH lightness at constant hue. When: color values, contrast or palettes have to be computed exactly, e.g. for accessibility checks. Not for: parsing any common |
color-blindness-simulate | Simulates how a color appears with protanopia, deuteranopia, tritanopia (Machado et al. 2009, severity 1) or achromatopsia, to check palettes for color-blind users. When: color values, contrast or palettes have to be computed exactly, e.g. for accessibility checks. Not for: parsing any common CSS co |
color-delta-e | Computes the perceptual difference between two colors: CIEDE2000 ΔE (CIELAB D65) and Euclidean OKLab ΔE, with a plain-language interpretation (< 1 imperceptible … > 10 very different). When: color values, contrast or palettes have to be computed exactly, e.g. for accessibility checks. Not for: compu |
color-name-nearest | Finds the closest of the 148 CSS named colors to a given color (by OKLab distance), with the distance, and whether it is an exact match. When: color values, contrast or palettes have to be computed exactly, e.g. for accessibility checks. Not for: parsing any common CSS color (color-convert). Side ef |
color-temperature | Approximates the sRGB color of a black-body light source at a temperature from 1,000 K to 40,000 K (Tanner Helland fit), e.g. 2700 K warm white or 6500 K daylight. When: color values, contrast or palettes have to be computed exactly, e.g. for accessibility checks. Not for: adjusting a color in OKLCH |
color-luminance | Returns WCAG relative luminance, OKLCH lightness, whether the color reads as light or dark, and whether black or white text has more contrast on it. When: color values, contrast or palettes have to be computed exactly, e.g. for accessibility checks. Not for: parsing any common CSS color (color-conve |
json-parse-check | Checks whether text is valid JSON (RFC 8259); on error returns the parser message with line and column. Also reports the top-level type and nesting depth. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: repairing almost-JSON typical o |
json-pretty | Parses JSON text and re-serializes it with 2/4-space or tab indentation, optionally sorting object keys. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: parsing JSON text and serializing it without whitespace (json-minify). Side effec |
json-minify | Parses JSON text and serializes it without whitespace; reports byte sizes before and after. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: parsing JSON text and re-serializes it with 2/4-space or tab indentation, optionally sorting o |
json-sort-keys | Recursively sorts object keys (by UTF-16 code units, or locale-aware), leaving array order unchanged. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: serializing a JSON value in RFC 8785 (json-canonicalize). Side effects: none (read-o |
json-canonicalize | Serializes a JSON value in RFC 8785 (JCS) canonical form: sorted keys, no whitespace, ECMAScript number formatting; also returns its SHA-256 for signing or deduplication. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: recursively sor |
json-pointer-get | Reads the value at a path such as /clientes/0/nit inside a JSON document using RFC 6901 syntax (~1 stands for /, ~0 for ~) and reports whether the path exists rather than failing. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: evalua |
json-path | Evaluates a JSONPath query (RFC 9535 subset: .name, ['name'], [n], [*], .., [a:b:c], unions, filters with ==, !=, <, <=, >, >=, &&, ||, !) and returns matching values and their normalized paths. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. |
json-patch-apply | Applies an RFC 6902 JSON Patch (add, remove, replace, move, copy, test) atomically to a document; any failing operation aborts the whole patch. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: computing an RFC 6902 JSON Patch that tran |
json-diff-patch | Computes an RFC 6902 JSON Patch that transforms document a into document b (object keys diffed recursively, arrays element-wise with tail adds/removes). When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: applying an RFC 6902 JSON Patch ( |
json-merge-patch-apply | Applies an RFC 7386 JSON Merge Patch: objects merge recursively, null deletes a key, any other value replaces. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: generating the RFC 7386 merge patch that turns document a into b (json-merg |
json-merge-patch-create | Generates the RFC 7386 merge patch that turns document a into b. Merge patches cannot set a value to null or patch inside arrays. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: applying an RFC 7386 JSON Merge Patch (json-merge-patch- |
json-flatten-paths | Flattens nested objects/arrays into one level with dotted keys (a.b.0.c) or bracket array indices (a.b[0].c). Empty objects/arrays are kept as leaves. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: returning a new object containing o |
json-unflatten | Rebuilds nested JSON from flat dotted keys; numeric segments and [n] become array indices (max 10,000) unless arrays is false. Conflicting keys and __proto__/constructor/prototype segments are rejected. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked e |
json-pick | Returns a new object containing only the given dotted paths (e.g. user.name, items.0.id) from the input object. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: flattening nested objects/arrays into one level with dotted keys (json-fla |
json-omit | Removes the given keys from an object; with deep=true removes them at every nesting level (e.g. strip password or token fields). When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: returning a new object containing only the given dotted p |
json-describe | Summarizes a JSON value: nesting depth, counts of each type, number of keys, serialized size, and the set of distinct paths (arrays collapsed to []). When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: turning sample documents (json-schem |
json-schema-validate | Validates a JSON value against a JSON Schema using a built-in subset (type, enum, const, properties, required, items, min/max*, pattern, format, allOf/anyOf/oneOf/not). No $ref; patterns are time-limited; unsupported keywords are reported. When: structured data (JSON, CSV, YAML, XML, arrays) has to |
json-schema-from-samples | Turns sample documents (for example API replies) into a starter JSON Schema: merges the types seen at each path, marks keys present in every sample as required and describes array items. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: |
csv-parse | Parses RFC 4180 CSV (quoted fields, escaped quotes, CRLF, BOM) with a chosen delimiter into an array of objects using the header row, or arrays of strings; optional number/boolean inference. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not |
csv-build | Converts an array of objects (or arrays) to RFC 4180 CSV; columns are the union of keys in first-seen order, nested values are JSON-encoded, and spreadsheet formula prefixes can be neutralized. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. N |
yaml-parse | Parses a safe YAML subset (block maps and sequences, plain/quoted scalars, flow [..] {..}, | and > blocks, comments) to JSON. Anchors, aliases, tags, merge keys and multi-documents are rejected. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. |
yaml-build | Serializes a JSON value as block-style YAML, quoting strings that would otherwise be read as numbers, booleans, null or YAML syntax. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: parsing a safe YAML subset (yaml-parse). Side effects |
xml-parse | Parses XML into JSON: attributes as @name, text as #text (or a plain string for text-only elements), repeated children as arrays. DTDs and custom entities are rejected (no XXE or entity expansion). When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactl |
ndjson-to-json | Parses newline-delimited JSON (JSON Lines) into an array, skipping blank lines; errors report the failing line number. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: serializing an array of JSON values as newline-delimited JSON (json |
json-to-ndjson | Serializes an array of JSON values as newline-delimited JSON (one compact value per line). When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: parsing newline-delimited JSON (ndjson-to-json). Side effects: none (read-only, no network acce |
dotenv-parse | Parses dotenv text (KEY=value, export prefix, single/double quotes, \n escapes in double quotes, # comments) into an object. No variable expansion or execution. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: parsing a safe YAML subse |
array-dedupe | Removes duplicate items (deep equality via canonical JSON) or items with a duplicate key, keeping the first occurrence and original order. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: grouping near-duplicate strings (dedupe-similar |
array-sort | Sorts an array of values or objects by one or more keys (stable), ascending or descending, numbers before strings, with locale-aware natural string comparison. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: sorting lines with locale- |
array-group-by | Groups objects by the value of a key (dotted path), returning an object of arrays and group counts; missing keys go under "null". When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: counting occurrences of each distinct value (array-count |
array-count-by | Counts occurrences of each distinct value (or of a key's value), sorted by count descending. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: grouping objects by the value of a key (array-group-by). Side effects: none (read-only, no ne |
array-chunk | Splits an array into consecutive chunks of a given size (last chunk may be shorter), e.g. for batching API calls. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: sorting an array of values or objects by one or more keys (array-sort). |
array-flatten | Flattens nested arrays to a given depth (default fully). When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: flattening nested objects/arrays into one level with dotted keys (json-flatten-paths). Side effects: none (read-only, no network |
array-set-ops | Computes union, intersection, difference (a−b) or symmetric difference of two arrays using deep equality, preserving first-seen order. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: removing duplicate items (array-dedupe). Side effec |
array-pluck | Extracts the value at a key (dotted path) from every object in an array; missing values become null or are dropped. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: grouping objects by the value of a key (array-group-by). Side effects: |
array-shuffle | Shuffles an array (Fisher-Yates) or draws a sample of k items without replacement. Uses secure randomness, or a seed for reproducible results. When: structured data (JSON, CSV, YAML, XML, arrays) has to be transformed, compared or checked exactly. Not for: sorting an array of values or objects by on |
datetime-parse | Parses an ISO 8601 or RFC 2822 date-time (or YYYY-MM-DD) and returns UTC ISO, Unix seconds/ms, local wall time in a time zone with offset, weekday, day of year, ISO week, quarter and leap-year flag. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, lea |
timestamp-convert | Converts a Unix timestamp to ISO 8601 (auto-detecting seconds, milliseconds, microseconds or nanoseconds by magnitude, or explicit unit), or an ISO date-time to Unix seconds and milliseconds. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years |
timezone-shift | Converts a wall-clock date-time from one IANA time zone to another (DST-aware via Intl), or an absolute instant (with Z/offset) to a target zone. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: listing the supported IANA time zo |
timezone-info | Reports a time zone's UTC offset and local time at an instant, its January and July offsets, whether DST is in effect, and the short and long zone names. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: listing the supported IANA |
timezone-list | Lists the IANA time zone identifiers supported by this runtime, optionally filtered by a case-insensitive substring (e.g. America, Bogota). When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: converting a wall-clock date-time from o |
timezone-overlap | Finds, for a date and a list of time zones with local working hours, the UTC window when everyone is within working hours, shown in each zone's local time. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: listing the supported IA |
datetime-format | Formats an instant in a time zone and locale, either with Intl styles (full/long/medium/short) or a pattern (YYYY MM DD HH mm ss SSS MMMM ddd dddd hh A Z; [text] for literals). When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: par |
date-add | Adds (or subtracts, with negatives) years, months, weeks, days, hours, minutes and seconds to a date-time. Calendar parts use local wall time in the zone and clamp month ends (Jan 31 + 1 month = Feb 28/29). When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month e |
date-between | Computes the difference between two dates or date-times: calendar breakdown (years, months, days) plus totals in weeks, days, hours, minutes and seconds; sign indicates order. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: coun |
age-calculate | Computes the exact age in years, months and days on a reference date (required, for determinism), total days lived, and days until the next birthday (Feb 29 birthdays observed on Feb 28 in common years). When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends |
duration-parse | Parses an ISO 8601 duration (e.g. P1Y2M3DT4H5M6S, PT90M, P2W) into components and total seconds (years = 365.2425 days and months = 30.436875 days, flagged as approximate). When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: formatt |
duration-format | Formats a number of seconds as an ISO 8601 duration (days and time only), a compact string (1d 2h 3m 4s), a clock (26:03:04) and words in English or Spanish. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: parsing an ISO 8601 du |
business-days-between | Counts working days between two dates, excluding configurable weekend days and a list of holidays. By default counts days after start up to and including end; inclusive counts both ends. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). No |
business-days-add | Adds (or subtracts) N working days to a date, skipping configurable weekend days and given holidays; useful for due dates and SLAs. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: adding or subtracting N business days (co-busine |
easter-sunday | Computes Western (Gregorian computus) and Orthodox Easter Sunday for a year 1583-4099, plus related Western dates: Ash Wednesday, Palm Sunday, Holy Thursday, Good Friday, Ascension, Pentecost, Corpus Christi. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month |
date-iso-week | Converts a date to its ISO 8601 week date (YYYY-Www-D) or an ISO week (year + week) to its Monday-Sunday date range; also reports weeks in that ISO year. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: describing a year and mont |
month-info | Describes a year and month: number of days, leap year, weekday of the first and last day, number of weekdays (Mon-Fri) and weekend days, and the quarter. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: returning a month as a gri |
calendar-month | Returns a month as a grid of weeks (Monday or Sunday first) with ISO week numbers, suitable for rendering a calendar. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: describing a year and month (month-info). Side effects: none ( |
date-range | Lists dates from start to end (inclusive) stepping by days, weeks or months (month steps clamp to month end), up to 1,000 dates, optionally skipping weekends. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: computing the differe |
date-relative | Describes the time between an instant and a reference instant as a localized phrase via Intl.RelativeTimeFormat ("in 3 days", "hace 2 horas"), choosing the largest sensible unit. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: f |
julian-day | Converts a UTC date-time to Julian Date, Modified Julian Date and Julian Day Number, or a Julian Date back to UTC. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: computing sunrise, sunset and day length for a place and date (su |
fiscal-period | Computes, for a date and the month the fiscal year starts, the fiscal year (named by its ending calendar year or its starting year), fiscal quarter, fiscal month and period bounds. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap years). Not for: |
cron-explain | Validates a 5-field cron expression (minute hour day-of-month month day-of-week; lists, ranges, steps, names, @daily-style macros) and describes it in English and Spanish, with the expanded field values. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends |
cron-next-runs | Lists the next N (≤ 50) run times of a 5-field cron expression after a given instant, evaluated in an IANA time zone (DST-aware; non-existent local times are skipped). Searches at most 8 years ahead. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, le |
sun-times | Computes the approximate sunrise, sunset, solar noon, civil twilight and day length for a latitude/longitude and date (astronomical formulas, about ±1-2 min), shown in UTC and a chosen time zone. When: a date, time-zone or calendar result has to be exact (offsets, daylight saving, month ends, leap y |
moon-phase | Computes the approximate moon phase for an instant from the mean synodic month (29.530589 days) since the 2000-01-06 18:14 UTC new moon: age in days, illuminated fraction and phase name (en/es). Accuracy about ±1 day for names. When: a date, time-zone or calendar result has to be exact (offsets, day |
base64-encode | Encodes text (UTF-8) or hex/base64 bytes as standard Base64 (RFC 4648 §4) with padding. When: bytes or text have to be converted to or from this encoding exactly, without guessing. Not for: decoding standard or URL-safe Base64 (base64-decode). Side effects: none (read-only, no network access, no sto |
base64-decode | Decodes standard or URL-safe Base64 (padding optional, whitespace ignored) to UTF-8 text, hex or base64. Rejects characters outside the alphabet. When: bytes or text have to be converted to or from this encoding exactly, without guessing. Not for: encoding text (base64-encode). Side effects: none (r |
base64url-encode | Encodes text or hex bytes as URL-safe Base64 (RFC 4648 §5: - and _ alphabet, no padding), as used in JWTs. When: bytes or text have to be converted to or from this encoding exactly, without guessing. Not for: decoding URL-safe Base64 (base64url-decode). Side effects: none (read-only, no network acce |
base64url-decode | Decodes URL-safe Base64 (RFC 4648 §5, padding optional) to UTF-8 text, hex or base64. When: bytes or text have to be converted to or from this encoding exactly, without guessing. Not for: encoding text or hex bytes as URL-safe Base64 (base64url-encode). Side effects: none (read-only, no network acce |
hex-encode | Encodes UTF-8 text (or base64 bytes) as lowercase or uppercase hexadecimal, with an optional separator between bytes. When: bytes or text have to be converted to or from this encoding exactly, without guessing. Not for: decoding hexadecimal (hex-decode). Side effects: none (read-only, no network acc |
hex-decode | Decodes hexadecimal (case-insensitive; spaces, colons and 0x prefix ignored) to UTF-8 text or base64. When: bytes or text have to be converted to or from this encoding exactly, without guessing. Not for: encoding UTF-8 text (hex-encode). Side effects: none (read-only, no network access, no stored st |
base32-encode | Encodes text or hex bytes as RFC 4648 Base32 (A-Z, 2-7) with optional padding, e.g. for TOTP secrets. When: bytes or text have to be converted to or from this encoding exactly, without guessing. Not for: decoding RFC 4648 Base32 (base32-decode). Side effects: none (read-only, no network access, no s |